president obama will head from washington to nevada. he has a campaign stop at a las vegas high school. he is going to stay in nevada before traveling to denver on wednesday. republican challenger mitt romney is spending the weekend cramming for the debate. political analysts say he needs a strong showing with recent polls showing him losing ground to the president in battleground states. >>> the university of denver is preparing to host that debate. it is going to focus on domestic policy and it will be mod rated by jim lehrer. two more presidential debates will be held on the 16th and 22. you can of course watch those debates live here on ktvu channel 2. coverage begins at 6:00. >>> while the election is on tuesday, november 6, some voters have already cast their ballots. 32 states and the district of columbia offer some form of early voting. iowa began last week. ohio starts tuesday. volunteers from the obama and romney camps are canvassing neighborhoods looking for early votes and it's an important strategy because it allows those p